iPhone 7S will be designed with double-sided glass

A rumor that Apple may not launch iPhone 7 with a completely new design this year. Instead, it will "save" for iPhone 7S launch next year. The most significant change is back to the design with use on both glass surfaces such as iPhone 4 while the screen will use Amoled technology.
 According to this rumor, upcoming Apple mobile will use the glass material in the side and have a certain curvature.

Failure to launch iPhone 7 with a completely new design also goes against the roadmap of the capital two years of Apple. However, extending this figure up to three years may be due to "Apple" are realizing that saturation in the cell phone market. The Apple will then use new features, new technology to convince users rather than the redesigned completely.

The other recent rumor also suggests the iPhone will be equipped with dual cameras, smart connector connecting as the new iPad Pro.

iPhone 7 Plus has optical zoom camera

Apple's new patent describes a system of compact lens for camera phones.

Light enters through the main lens and then be redirected to other lenses along camera body. The mini lenses arranged in an L shape, and while moving the lens, zoom will result.

With the new design, the iPhone 7's camera is also capable of shooting wider angle to the impressive images. 

Before, it rumors that Apple equipped with dual camera system for the iPhone 7 Plus.